Radiator



lvm-13,1923. y 1,474,082

, 4 o. H. K oELKER RADIATOR Filed Nov. 2.9, 1918 2 Sheets-Sheet 2 aww/mtu Oscar H. /fae//rer Patented Nov. i3, i923..

OSCAR E. KOELKER, 0F 'JJOI.-}.1DO, OHIO, ASSIGNOR T0 THE WILLY'S-OVERLAND COM- PANY, OF TOLEDO, OHO, A CORPORATION OF OHIO.

RADIATOR.

Application led November 29, 1918. Serial No. 264,605.

To aZZ whom t may concern: Y

Be it known that I. scar. H. Konnrrnn, a citizen of the United States, residing at Toledo, county of Lucas. and State of Ohio, have invented certain new and useful Improvements in Radiators, of which I declare the following to be a full, clear, and exact description. Y

This invention relates to an 'improved type of automobile radiator` construction, and has for its object to provide a radiator core constructed to form vertical water passages and horizontal transverse air passages, the built-up construction having improved cooling capacities in view of the shape Vor character of the water passages and the air cells. which latter are of such character as to offer substantially no resistance to the passage of air through the radiator and hence greatly increase and facilitate the passage of air and the cooling of water in the radiator.

Further objects of the invention relate to the character of core `formed according to one method by sheet metal units bent as necessary to forni the air passages referred to and the water passages, when formed b v juxtaposinoj a plurality of air cell units, are such as to particularly co-operate with the air passages in eflicientlf,7 cooling the water. Moreover, the invention contemplates a construction which will produce-a more uniform. even temperature throughout the en- Y tire radiator, and one in which the several units or water tubes may, if necessary, be taken out for repair and replaced in the vassembled radiator core. The character of air passage formed by the present construction is Ain the form of the well known Venturi pipe section, which is abruptly tapered on all sides from the frontof the radiator to a relatively restricted portion and then gradually widens out from this point to the rear side of the radiator, thus forming, as will be understood in the art, an air passage which will transmit substantially the entire volume of air coming in contact with the front air of the radiator, and with very little, if any,

resista-nce, it being` understood that the invention contemplates'. the construction of these cells from sheet metal. formed and bent in a novel manner.

Further objects of this invention relate to economies of manufacture directly resulting from the construction and to details of construction, as will hereinafter appear trom the detailed description to follow. I accomplish t-he objects of my invention in one instance by the construction shown and described in the following specifications, but it is evident that the same may be varied without departing from the spirit and scope of the invention, as pointed out in the apn pended claims. A structure constituting one embodiment of my invention, which may be the preferred, is illustrated in the accompanying drawings.

Figure I is a` front elevation of the assembled radiator.

Figure H is an enlarged, sectional perspective view of aA portion of the radiator core, showing the same attached to the upper header of the radiator.

Figure HI is a plan View of the blank sheet from which the unit is corrugated to make the water and air cells showing;a one embodiment of my invention.

Figure IV is a sectional view on the line )IVe-IV of Figure Il.

Figure V is a vertical sectional view ta` ken on the line V-V of Figure Vlr.

Figure Vl is a sectional view taken on the line VI-VI of Figure V, and

VFigure VH is a sectional view showing one of the completed air sections taken on line Vil-VH of Figure II.

ln Figure l of the drawings, the assembled radiator is illustrated as having an upper water receiving chamber 10 and a lower receptacle l1 between which is located my improved type of radiator core l2. The adiator core l2 conducts water from the upper to the lower receptacle and cools the same and is formed by an assembly of a plurality of units, each of the units being formed preferably in accordance with my invention in the manner as illustrated in VvFigure III and assembled as shown in the YFigure III, and it will be seen that each half of the sheet is similarly madeV and that there is provided in the corrugations a plane face 17 which extends from the front to the rear edge of the radiator. Between alternate plane faces 17 are a plurality of inclined faces forming the corrugations, a

face numbered 18 being provided with a flat portion 18 adjacent the median line of the sheet 15 and a transversel offset ledge 19. The face 18 isv then inclined relatively sharply, as at 19a, to a point between the median line and the center of the half of the sheet 15, and tapers gradually therefrom as shown at 2O down to near the outer portion of the sheet which when bent on its median line forms the rear edge of the radiator unit. The face 18 adjacent the outer edge of the plate 15 is provided with an ofi'- set ledge 19 similar to the offset 19 and terminates in a flat end portion 20 similar to the flat edge 18. This face 18 of the several corrugations has adjacent thereto a vertical face 21, which is forrnedvsimilar to the face 18 to provide the two tapered sections out of alignment with the general plane of the sheet of metal, and the ofl'set flats at the middle of the sheet 15 and the outer edge thereof.V A face 22, corresponding to the face 18 of the corrugations, is formed on the other side of the face 21, and is joined at its other side with a second plane face section 17. Thus a series of corrugations or faces as described are formed through the sheet metal from top to bottom thereof. and on both sides of t-he median line 8O on which line a series of cuts are made as Shown. The sheet thus corrugated` as illustrated in Figure III1 is then bent on thev median line, bringing the plane faces 17 back to back and the meeting edges thereof are soldered together. The offset ledges on the faces are then on the outside of the units. The members thus made constitute an air cell unit having a plurality of transe verse air passages formed in the shape of a Venturi pipe tapering relatively abruptly from the front edge of the unit to a restricted portion, and then tapering out more gradually to the rear edge thereof. this resulting from the particular shape given the faces of the corrugations, as has been described, the assembled unit being shown in Figure VI, Of course, a unit could be made as shown.

An air tube section thus formed is illustrated in Figure VII by the numeral 25,

where the plurality of transverse air passages 251 which extend from front to rear of the radiator, are also shown. It will also be noted that in one instance the two metal sections are overlapped at the top by the extensions 27 and 28 andV may be soldered therealong` to prevent the passage of water therethrough when finally assembled'in the upper water receiving tank ofthe radiator, and the lower end of the'unit may be similarly closed. When a plurality of air cell units are nested together with the swells o-f one unit resting down in the valleys of an adjacent unit, each of the front and rear edges of the faces 18, 21 and 22 of the corrugations being laterally offset as indicated.v forin spacing means between the several air tube sections tothereby form a water passage 32 of zig zag character. It will be noted that the plane faces 17 of the several corrugations of one air cell unit are located opposite one of the faces 21 of a rco-acting adjacent unit, so that the offset on the plate 21 adjacent to the front and rear edges space the two plates and form water passages even though the face 17 is not offset, this construction being particularly illustrated in Figures IV and V.l It will also be noted that each alternate air tube section be made to terminate adjacent to the upper and lower portions thereof, as shown in Figure VII, in a vert-ical extension consisting of the two abutting plane faces 17 soldered together, and arranged to seal each of these air tube sections, similar to the sealing or" the sections by means of lateral offset portions 27 and 28 of the interspersed alternating air tube sections.

From the construction as described it will be seen that the builtup radiatorv core is provided with a plurality of zig zag water passages of elongated transverse configuration extending from the upper water tank 10 to the lower tank 11 of the radiator. while interspersed between the same are a plurality of transverse air passages extend! ing from front to rear of the radiator, and each of said passages are formed in the shape of a Venturi pipe, the airupassages being restricted abruptly from the front edges of the radiator to a point between the front edge and the center line ofthe radiator, and hence taper gradually therefrom to a point adjacent to the rear edge of the radiator core. This construction, as will be readily understood by those skilled in the art, is particularly eiiicient in cooling the water in the radiator, since the air tube sections tapered as described offer substantially yno resistance to the volume or passage of air through the radiator. Moreover, attention is llO The reto the rear of the radiator is substantially relatiif'ely small, and therefore, the more uniform temperature of water is maintained. lt is apparent that the core could be constructed by forming the water passages as units and then assembling the same to form the air cells.

l/Vhile l have described my invention somewhat in detail, and as embodied in certain forms of construction, it is to be understood that the invention is not limited thereto. Attention is called to the fact that after as-V sembly, the front and rear edges of the radiator section are dipped in solder to securely unite the abutting flanges of the offset portions of the corrugations to close the water passages at the front and rear edges of the radiator, and the core is also secured, preferably by soldering, to flanges on the headers.

My invention contemplates broadly any arrangement of sheet metal radiator sections built up to form the construction disclosed herein, and therefore, l intend and desire to claim the same broadly, as pointed out in the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

l. A radiator composed of a plurality of nested air cell units spaced to form water passages therebetween. each of said air cell units being composed of a pair of opposed plates of zig zag conformation, the faces of said zig zag plates at the `body portion thereof being bent relatively abruptly from the front to a point Vbetween the front edge and the center of the plate, and hence gradually tapering to the rear edge of theV radiator out of the plane of the front and rear edges thereof, whereby when said plates are secured toge-thervvith thevalleys of the Zig zags facing each other, a plurality of transverse Venturi shaped air passages are formed.

2. A radiator unit formed by bendingalong its median line a corrugated plate of substantially double the width of the radiator core, said plate being bent transversely to form a plurality of corrugations eXtending from front to rear of the radiator, certain of said corrugations being bent out of the plane of the front and rear edges thereof at a relatively abrupt angle from the front edge of the plate to a 'point between the front edge and the center of the plate, and hence extending gradually therefrom to the rear edge of the plate.

3. A radiator core comprising a plural ity of nested air cell units, each of said units composed of sets of co-acting corrugated plates.v certain faces ofthe corrugations of said plates being angularly transversely bent relative to the front and rear edges of the plate, and offset portions adjacent to the front and rear edges of said plates to form means to space the nested units one from the other and form a zig zag water passage therebetween, each of said plates of the unit being` juxtaposed to form a plurality of transverse Venturi shaped air passages through the radiator.

Y 4E. ln a radiator, a plurality of nested air cell units, each of said units being composed of a pair of co-acting plates, each of said` plates being corrugated to provide a plurality of faces, one of said faces being substantially in a plane extending from front to rear of the radiator, and each of the adjoining faces being transversely bent out of the plane of the front and rear edge thereof, said bent faces being provided with offset spacing means adjacent to front and rear edges thereof, said plates 'being joined with the plane faces in contact, said units being nested so as to bring an offset plate on one unit in contact with the plane face of a plate of an adjacent unit.

5. A radiator strip adapted to be bent into an air cell unit of a radiator. said strip beingsubstantially twice the width of the depth of the radiator, said strip being transversely corrugated to form a plurality of faces, certain of said faces being substantially in a plane from front to rear of said strip, and others of said faces being bent at an angle from the median line of said strip rather abruptly to a point between said median line and the center lines of each half of said strip, and hence gradually tapering to the outside edges of said strip. there being offset portions on each half of the strip adjacent to the median line thereof, and 0n each edge of the strip for the purposes specified.

6. In a radiator.` a radiator core made up of a plurality of strips of metal so corrugated as to form a plurality of transverse Venturi shaped air passages, said air passages being substantially surrounded by Zi zagwater passages extending from top to bottom of said radiator core, and means to close the front and rear edges of said water passages.

7. In a radiator, a radiator core made up of a plurality of strips of metal so corrugated as to form a plurality of transverse Venturi shaped air passages, said air passages `being substantially surrounded by zig zag Water passagesextending from top to bottom of said radiator core.

`8. In a radiator construction, a plurality of nested air cell units, each of said units being composed of a plurality of corrugated plates, the corrugations of said plates being arranged to form tapered sldes of Venturi shaped passage extendlng from front to I rear of the radiator, the front and rear together, the top and bottomof said air nellV units being joined together to prevent Water from entering the air cell units from the upper and lower water receiving tank of theV radiator. Y

In testimony whereof, I aiiix my signature.

OSCAR I-I. KGELKER, 

